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#1 Federal

6-m resolution image of shaded relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 2, pseudo-colored by backscatter intensity (Q2_BACKPC.TIF)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder...

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Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 10:48 PM

#2 Federal

6-m resolution image of shaded relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 3, pseudo-colored by backscatter intensity (Q3_BACKPC.TIF)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder...

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XML

Search relevance: 1.00 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 10:15 PM

#3 Federal

6-m resolution gray-scale image of multibeam backscatter intensity in western Massachusetts Bay map Quadrangle 3 (Q3_BACKGS.TIF)

Organization: Department of the Interior
Dataset Last Updated: November 11, 2021 at 12:00 AM

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder...

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XML

Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 09:31 PM

#4 Federal

6-m resolution gray-scale image of shaded-relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 2 (Q2_SRELIEF.TIF)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder...

XML
XML

Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: September 10, 2026 at 10:05 PM

#5 Federal

6-m resolution gray-scale image of multibeam backscatter intensity in western Massachusetts Bay map Quadrangle 2 (Q2_BACKGS.TIF)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder...

XML
XML

Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:18 PM

#6 Federal

6-m resolution image of shaded relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 1, pseudo-colored by backscatter intensity (Q1_BACKPC.TIF)

Organization: Department of the Interior
Dataset Last Updated: November 11, 2021 at 12:00 AM

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder...

XML
XML

Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 10:09 PM

#7 Federal

6-m resolution gray-scale image of shaded-relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 1 (Q1_SRELIEF.TIF)

Organization: Department of the Interior
Dataset Last Updated: March 18, 2024 at 12:00 AM

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder...

XML
XML

Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 08:16 PM

#8 Federal

6-m resolution gray-scale image of shaded-relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 3 (Q3_SRELIEF.TIF)

Organization: Department of the Interior
Dataset Last Updated: November 11, 2021 at 12:00 AM

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder...

XML
XML

Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:47 PM

#9 Federal

6-m resolution gray-scale image of multibeam backscatter intensity in western Massachusetts Bay map Quadrangle 1 (Q1_BACKGS.TIF)

Organization: Department of the Interior
Dataset Last Updated: November 11, 2021 at 12:00 AM

The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder...

XML
XML

Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 10:44 PM

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6-m resolution image of shaded relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 2, pseudo-colored by backscatter intensity (Q2_BACKPC.TIF)

6-m resolution image of shaded relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 3, pseudo-colored by backscatter intensity (Q3_BACKPC.TIF)

6-m resolution gray-scale image of multibeam backscatter intensity in western Massachusetts Bay map Quadrangle 3 (Q3_BACKGS.TIF)

6-m resolution gray-scale image of shaded-relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 2 (Q2_SRELIEF.TIF)

6-m resolution gray-scale image of multibeam backscatter intensity in western Massachusetts Bay map Quadrangle 2 (Q2_BACKGS.TIF)

6-m resolution image of shaded relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 1, pseudo-colored by backscatter intensity (Q1_BACKPC.TIF)

6-m resolution gray-scale image of shaded-relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 1 (Q1_SRELIEF.TIF)

6-m resolution gray-scale image of shaded-relief multibeam bathymetry in western Massachusetts Bay map Quadrangle 3 (Q3_SRELIEF.TIF)

6-m resolution gray-scale image of multibeam backscatter intensity in western Massachusetts Bay map Quadrangle 1 (Q1_BACKGS.TIF)